1. Things are momently changing.
2. That's because everything isn't independent (absolute) and permanent existence like God.
3. If you are an absolute God, you can stop changing.
4. Also, everything isn't self-sufficient.
5. So, everything is an interdependent and impermanent existence.
6. In other words, our survival and future entirely depend on others.
7. Therefore, we can't survive and expect bright future without cooperation with others.
8. That's why for cooperation we need to reduce selfishness and to practice compassion.

This is the ultimate truth of the earth, 'Interdependence'.

If we analyze only humans,
1. Humans are all the same in fundamental level, physically, emotionally and consciously.
2. Nobody wants suffering and everyone wants happiness. So, only you can't be special.
3. Even if there are differences in money, power, status and fame, those are secondary level.
4. Humans are not also self-sufficient, so can not live alone.
5. Therefore humans are interdependent existence.
6. In other words, our survival and future entirely depend on others.
7. Therefore, we can't survive and expect bright future without cooperation with others.
8. That's why for cooperation we need to reduce selfishness and to practice compassion.